2-Cyano-5-(difluoromethyl)-4-iodopyridine-3-carboxamide
4-Cyano-6-(difluoromethyl)-3-hydroxypyridine-2-carboxamide
4-Cyano-2-(difluoromethyl)-3-hydroxypyridine-6-carboxamide
5-Cyano-3-(difluoromethyl)-2-hydroxypyridine-4-carboxamide
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